jQuery addClass example

Change class name on click in jQuery

by Lennart Bader

HTML

<input id="bank_ifsc_code" maxlength="11" />

JavaScript

$("#bank_ifsc_code").keyup(function(e) {
    var val = $(this).val();    
    val = val.replace(/[^a-zA-Z0-9]/, "");
    $(this).val(val);
});